Alarm-latch.



No. 818,362. PATENTED APR.17, 1906. 0. E. 0. EDEY. ALARM LATCH.

APPLICATION FILED FEB. 1, 1904.

4 SHEETS-SHEET l,

(fiz fi W X if I i No. 818,362. PATENTBD APR. 17, 1906. 0. 5.0. EDEY.

ALARM LATCH.

APPLICATION FILED PIS-8.1.1904.

4 SHEETS-SHEET 2.

No. 818,362. PATENTED APB.1'7, 1906. O. B. G. EDEY.

ALARM LATCH.

APPLICATION FILED FEB.1, 1904.

4 SHEETS SHEET 3 No. 818,862. PATENTED APR. 1'7, 1906.

C. E. O. BDEY. ALARM LATCH.

APPLICATION FILED FEB. 1, 1904.

4 SHEETSSHEET 4v attozwm i.

p'nrrnn STATES PATENT oFFion.

ALARM-LATCH Specification of Letters Patent.

Patented April 17', 1906.

Application filed February 1, 1904. Serial No. 191,542.

To aZZ whom it may concern:

Be it known that I, CHARLES E. C. EDEY, a subject of the King of GreatBritain, residing at Tacoma, in the county of Pierce and State ofWashington, have invented certain new and useful Improvements in Alarm-Latches; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

The present invention relates to improvements in door looks or latches,and has particular relation to latches which maybe made operable fromone or both sides of the door, as desired, or may be locked againstoperation from either side of the door and which are also provided. witha safety alarm mechanism.

The invention consists in certain novel features in the construction andarrangement of parts, as will be hereinafter fully described andclaimed.

In the accompanying drawings, Figure 1 is a partial vertical sectionalview of my invention, some portions thereof being shown in elevation, aportion of the door to which the same is attached being shown insection. Fig. 2 is a broken face view of the exterior side of the doorto which the mechanism is attached. Fig. 3 is a view, partially inelevation and partially in section, of the lock mechanism, the partsbeing broken away. Fig. 4 is a sectional view upon the line 4 4 of Fig.3. Fig. 5 is a detail view showing the alarm-actuating mechanism. Fig. 6is a detail view illustrating the formation of the connection for theinterior end of the knob-shaft. Fig. 7 is a detail view of the interiorknob-shaft, partially broken away to show the recesses. Fig. 8 is adetail sectional view showing the rockshaft and the sleeve-shaftsurrounding the same, together with the adjacent parts of the mechanism.Fig. 9 is a similar view, but showing the parts with the knobsconnected, so as to operate simultaneously. Fig. 10 is a detail viewshowing the latch-locking device.

The structure of the lock or latch mech anism constituting the presentinvention is such that it may be made so as to be operable by means ofthe handles on each side of the door or by means of one handle only, orit may be so adjusted that it cannot be operated from either side of thedoor. Operating in conjunction with the latch mechanism is a safetyalarm mechanism for indicating any unauthorized operation of the latchand attracting attention thereto. In the drawings I have illustrated thelock mechanism as mounted in a door 1, the door being provided withsuitable recesses in its edge for accommodating all the parts of thelock and the alarm device.

For the purpose of describing the invention a manually-operated alarmmechanism 2 is shown in proper position to cooperate with the latchmechanism, although other types of alarm mechanism may be employed. Themajor part of the lock mechanism is carried by a plate 3, secured to theinner side of the door, and a knob 4 is provided upon the same side ofthe door for operating the latch mechanism. The knob 4, which upon anoutside door would be the inner knob, is secured to a shaft 5, the saidshaft 5 extending through the lock mechanism a suflicient distance tomake it possible to connect the same with a knob 4* upon the outside ofthe door when desired. of a limited reciprocating movement within thelock mechanism and extends through a sleeve 6, which sleeve has abearing in central apertures formed in the plates of the lock-housing.The outer end of the sleeve 6 is formed with oppositely-arranged shallowrecesses 7 and oppositely-arranged relatively deeper recesses 8, theplane of the deep recesses being at right angles to the plane of theshallow recesses 7. A pin 9, carried by the end of the shaft 5, projectsa suflicient distance beyond the periphery of the shaft to .be capableof engaging either the shallow recesses or the deep recesses, accordingas they are brought opposite one set of recesses or the other. The innerknob 4 is secured to the inner end of the shaft 5, and the pin 9projects sufficiently beyond the periphery of the knob-stem to engagethe said recesses 7 and 8. The pin 9 is normally drawn against the endof the sleeve 6 by means of a spring 12, which surrounds the shaft 5 andbears at one end against the inner end of the sleeve 6, while at itsother end it bears against the collar 13, secured to the said shaft. Theouter end of the shaft 5 extends into the hollow shank or The said shaft5 is capable stem of the outer knob 4 and is provided g with a pinextending transversely-through the same and projecting at its ends asufficient distance to engage oppositely-arranged recesses or notchesl1,formed within the said stem. It will be apparent that when the endsof the pin engage the said recesses 11 IIO ' the door.

that the shaft may be turned by rotating the outer knob. If the shaft 5,however, is drawn inwardly a sufficient distance to permit the ends ofthe pin 10 to escape the notches 11, the outer knob may be rotated ineither direction without affecting the shaft,

and therefore without operating the lock mechanism. When it is desiredto set the mechanism so that the latch may be operated from each side ofthe door, the inner knob is operated so as to permit the pin 9 to engagethe deep recesses or notches 8 of the sleeve 6. The spring 12 will forcethe shaft 5 outwardly until the pin 10 carried thereby engages therecesses 11 in the stem of the outer knob. The engagement of the pin 9with either of the recesses 7 or the recesses 8 is suflicient to make itpossible to turn the latch-actuating sleeve 6 by means of the rotationof the shaft 5, so that when the pin 9 engages the deep slots 8 the saidsleeve may be positively turned by either handle. When it is desired torender the outer handle inoperative as far as actuating the lockmechanism is concerned, the inner knob is drawn inwardly, pulling theshaft 5 inwardly against the tension of the spring 12, and as soon asthe ends of the pin 9 are clear of the recesses 8 the shaft 5 is given aquarter of a turn and the ends of the pin 9 are permitted to be drawn bythe spring 12 into the shallow recesses 7. The recesses 7 aresufficiently shallow to prevent the shaft from extending far enough intothe hollow stem of the outer knob to bring the ends of the pin 10 intoengagement with the recesses 11. The outer knob is thus left free torotate with respect to shaft 5.

The latch mechanism is provided with a re ciprocating locking member 15,which projects through openings formed in the housing of the mechanismand through the portion of the plate 3 which is turned over the edge ofThe inner portion of the reciproeating latch 15 is provided with anelongated opening surrounding the inner end of the col lar 6. A spring16, secured to the inner wall of the latch-housing, bears with its freeend against the inner rounded end of the reciprocating latch, tending toforce it normally into its outermost position. The latch 15 is madereversible-that is to say, both sides of the latch with the exception ofits outer end are made alike, so that the beveled outer end may beturned in either direction, according to the direction in which the dooris to swing and it is thus made effective for use on any door.Projecting from each edge of the latch are arms 17, which coiiperatewith the actuating-arm of a key lock-stop 19. The lockstop 19 isoperable by means of a key inserted through an opening 20. The keyengages the barrel of the lock-operating stop 19, the

said stop projecting laterally therefrom, as clearly shown in Fig. 3.The arm 17 on one edge of the latch is preferably arranged adj acent atone face thereof, as shown in Fig. 4, while the other arm 17 upon theopposite edge of the latch is arranged near the other face of saidlatch, so that either arm will be engaged by the stop 19 no matter Whatthe position of the latch 15. The use of the key lock-stop 19 makes itpossible to open the door from the outside by means of a properlyauthorized key when the outer knob is dis connected from the operatingmechanism. The opposite faces of the latch are provided with depressionsor recesses 21, which accommodate the actuating-cam ends 22, whichproject from the sleeve 6. The said cams 22 when moved by the operationof the doorknobs press against the ends of the recesses 21, forcing thelatch inwardly against the ac tion of the spring 16. The recesses 21. oneach side of the latch are made exactly alike, so as to not interferewith the reversible feature of the latch. It will be evident that thelocation of the recesses 21 with respect to the actuating-arms 22 issuch that the sleeve 6 may only have a limited rotation within thelocking mechanism. This, however, is sufiicient for the purpose ofretracting the latch 15 until it is disengaged from the j amb-plate ofthe door when it is desired to open the said door. For smoothly andproperly guiding the inner ends of the latch the said latch is providedat its inner end and upon opposite sides with slots 23, which engage aguidingrib 24, mounted within the latch-housing. In this simple mannerany binding of the parts within the latch mechanism is obviated and thelatch is prevented from being twisted from its normal and properposition. The notches are formed upon both sides of the latch in orderto accommodate the reversal thereof. Upon the opposite faces of thelatch at a point near the opening through which the latch passes out ofthe latch-housing are formed shoulders 25, which shoulders projectrearwardly from the end portion of the latch. One of the shoulders willalways project through an aperture formed in the inner face-plate of thedoor, so that it may be engaged by the shouldered end 26 of a pivot edbar 27. The bar 27 is pivoted upon the central portion of the sleeve 6,a collar on said sleeve holding the arm in place. The bar 27 is thusloosely mounted on the sleeve 6 and may be permitted to fall into avertical position, as shown in Figs. 8 and 9, so that the shoulder 26carried thereby will not look the latch 15 against movement, or the saidarm may be turned upwardly to a horizontal position so as to'extendlongitudinally of the latch 15, as shown in Fig. 10, so as to oppose theshoulder 26 to the projection or shoulder 25 and prevent the inwardmovement of the said latch. A finger-engaging extension 28 projects fromthe shoulder 26, whereby the pivoted bar 27 may be shifted into and outof the path of the shoulder 25 upon the latch.

When the bar 27 is moved opposite the shoul-" which is guided in itsmovement upon the plate 32 of the lock-housing by means of pins engagingan elongated slot 34, formed in the said slide 31. The end 30 of theslide which bears against the cam 29 is turned at right angles to thebody portion of the slide, as clearly shown in Fig. 5. The said end 30is normally forced against the cam 29 by means of a spring 41, which isinterposed between it and the projecting end of one of the slot-engagingpins 33.

nected withit an actuating-slide 36.

which rides upon the shank of the screw 38,

which connects the inner and outer plates of 1 the lock mechanism.Projecting from the:

end of the slide 36 is a shoulder or extension 39, which engages thepush-rod 40 of thealarm-bell mechanism 2. A complete rotation of the cam29, caused by turning the outer knob, will force the slide 31 upwardly,as well as the slide 36 and the shoulder or projection 39, setting thealarm mechanism in operation and calling attention to the fact that someunauthorized attempt at operating the latch mechanism is being made. Theshaft of the cam 29 is such that a quarter of a turn of the outerdoor-knob willaifect the operation of the alarm mechanism. Thearrangement of the notches or recesses 11 in the outer knob is such thatthe alarm mechanism cannot be actuated by the cam 29 when the knob isconnected with the inner knob and in position for actuating thelatchshaft 5 and retracting the latch 15. This results from the factthat the cams 22 are limited in their movement by the extent to whichthe latch can be moved, and this is not sufiicient to permit the cam 29to be rotated enough to operate the alarm.

The construction of the alarm-bell 2 (indicated in the drawings) formsno part of the present invention and does not, therefore, needparticular description at this point. It may be preferable at times toemploy an electrical alarm mechanism in place of the mechanical alarm,(shown at 2'in the drawings.) In such a case an electrically-operatedbell or signal device is substituted therefor, and a battery 43 for saidplate may be located at any convenient point, with the terminal 14:extending to the spring-plate 45 and the other The outer end of theslide 31 is also bent at right angles and has con- The slide 36 isprovided with an elongated slot 37,

terminal connected to the member or plate 35. The circuit through theparts is completed by wires 46 and 48. The operation of the electricaldevice is substantially the same as the operation of the mechanicaldevice, with the exception that the slide 36 and the projection 39 maybe omitted.

From the above description it will be evident that when the parts occupythe position shown in Figs. 1 and 8 the outer knob 4 may be rotated ineither direction and may be given a complete rotation without retractingthe latch 15, because of the fact that the pin 10 does not engage therecesses 11. When the knob 4" is thus capable of rotation, it will carrythe cam 29 around with it sufficiently to press against the projection30 of the alarm mechanism and operate the same, giving an audiblesignal.

When it is desired to use the latch mechanism as a day-latch, the knob 4is drawn inwardly sufficiently to release the pin 9 from its engagementwith the shallow recesses 7 and given a quarter of a turn, so that thesaid pin 9 may enter the recesses 8, as shown in Fig. 9. The action ofthe spring 12 will then cause the reciprocation of the shaft 5sufficiently to bring the pin 10 into engagement with the recesses 11 inthe shank of the outer knob 4 The outer knob is thus looked upon theshaft 5, and the said shaft may be turned by the actuation of either ofsaid knobs.

It is convenient and desirable at times to lock the latch 15, so as toprevent its operation by the use of the ordinary key or by the operationof either knob, in which event the pivoted piece or bar 27 is swung intothe position indicated in dotted lines in Fig. 3, the shouldered portion26 thereof being brought 0 posite the shoulder 25upon the latch, and tus preventing the inward movement of the said latch.

It will be evident that the minor details of construction of themechanism above described may be altered without departing from thespirit of the invention.

Having now describedmy invention, What I claim as new, and desire tosecure by Letters Patent, is

1. An alarm-latch mechanism, comprising a rock-shaft, a revoluble hollowlatch, actuating sleeve-shaft coperating therewith. a cam capable ofbeing connected to and disconnected from said rock-shaft and an alarmoperable by said cam when it is disconnected from said rock-shaft.

2. An alarm-latch mechanism having a erable by the actuation of the camwhen the movable knob is disconnected from the said revoluble shaft.

3. A latch mechanism provided with a rock-shaft, a cam mounted in saidlatch mechanism, means for moving the shaft longitudinally and therebyconnecting it with the cam, and an alarm mechanism operable by theaction of the cam.

4. An alarm-latch mechanism comprising a plurality of rotatableknob-shafts, one of which shafts is fixed against longitudinal movementwhile the other is capable of longitudinal movement, a cam on the fixedknob-shaft, and an alarm-actuating mechanism operable thereby.

5. An alarm mechanism comprising a plurality of revoluble knob-shafts,an intermediate shaft rigidly connected with one knobshaft and capableof being connected or disconnected from the other knob-shaft, a camcarried by the said latter knob-shaft and an alarm mechanism capable ofactuation by the movement of the cam when the knob which carries thesame is disconnected from the said-intermediate shaft, the connection ofthe knob carrying said cam, with the intermediate shaft operating toprevent the actuation of the alarm mechanism.

6. An alarm-latch mechanism having a rockable shaft, a sleevesurrounding the same, a cam adjacent to one end of said sleeve, meanscapable of operation for connecting or disconnecting the sleeve, a knobfor turning the cam with the said knob and cam, and an alarm mechanismoperable by the cam.

7. An alarm-latch mechanism comprising a rock-shaft, a knob-shaftcapable of movably receiving one end of the rockshaft, a cam carried bythe knob-shaft, the said cam being operable by the shaft or by therockshaft'when connected with the knob-shaft, means operable forconnecting or disconnecting the knob-shaft with the rock-shaft, and analarm mechanism operable by the said cam upon the disengagement of theknob-shaft from the rock-shaft.

8. An alarm-latch comprising a rock-shaft, a rotatable knob-shaft, a camcarried thereby, an alarm mechanism operable by the cam, a latch.operable by either the said rockshaft or the knob-shaft, and an abutmentmember upon said latch and a member carried by the rock-shaft adapted tobe projected into the path of said abutment member.

9. An alarm-latch mechanism comprising a plurality of knob-shafts, bothof which are capable of a rocking movement while one of them is capableof rotation, means operable for connecting or disconnecting the shafts,a latch operable by either of said shafts when locked together, a camupon one of said knobshafts, and an alarm operable by said cam.

10. An alarm mechanism having a non-reciprocable shaft, a cam carriedthereby, a reciprocating shaft adapted to engage the nonreciprocableone, means for moving the reciprocating shaft in position to hold therotating shaft, a latch operable by either shaft when they areconnected, and an alarm mechanism operable by the cam when the shaftsoccupy a disengaged position.

11. An alarm-latch provided with a rockshaft, and a rotatable shaft,means for rocking said shaft, a cam on the rotatable shaft, sring-actuated sliding members operable by the cam, and an alarmmechanism actuated by the sliding members.

12. An alarm-latch mechanism comprising a reversible latch formed with abeveled projection portion, an integral shoulder formed thereon, amovable stop cooperating therewith, the said latch having a guide-grooveformed thereon, and a guiding-rib engaging the said groove for directingthe reciprocating movement of the latch.

13. An alarm-latch mechanism comprising a casing, a latch-actuatingsleeve mounted therein, a reciprocating rock-shaft having a bearing inthe sleeve, an alarm actuating cam mounted adjacent to the said sleeve,and means for connecting the reciprocating rockshaft with the said cam,the sleeve being capable of controlling the engagement of the rock-shaftwith the said cam.

14. An alarm-latch mechanism comprising a housing, a sleeve mountedtherein, a reciprocating rock-shaft extending through the sleeve, thesaid sleeve having recesses of different depths formed in one endthereof, a cam for actuating an alarm, and a spring tending normally toforce the rock-shaft into engagement with the cam, the recesses of thesleeve affording means for permitting or preventing the engagement ofthe rock shaft with the said cam.

15. A lock mechanism comprising a reciprocating latch, a rocking sleevefor actuating the same, a reciprocating shaft extending through the saidsleeve having actuatingpins in the ends thereof, a knob or handlesecured to one end of said shaft, an alarm-actuating handle movablyengaging the other end of said shaft, the pin at that end of said shaftbeing capable of connecting the shaft with the alarm-actuating handle, aspring tending to force the pin into engagement with the said handle,and means carried by the latchactuating sleeve for preventing orpermitting of the said engagement.

16. A latch mechanism comprising a housing, a latch-actuating sleevemounted therein and having shallow and deep notches formed in its edge,a reciprocating shaft extending through the sleeve and having a pinsecured thereto capable of engaging either the shallow or the deepnotches, a spring interposed between a collar on the shaft and thesleeve, tending to draw the pin into engagement with the notched end ofthe sleeve, an outer handle ca able of movement with respect to the shat, means carried by the shaft for connecting it with the outer handlewhen the in is in engagement with the deep notches 0 the sleeve, thesaid shaft not being connected with the outer handle when the pin is inthe shallow notches and an alarm mechanism operable by the said outerhandle when it is movable on the shaft.

17. A latch mechanism comprising a reciprocating latch, an actuatingsleeve for moving the same, and an outer and inner knob, a reciprocatingshaft secured to one of said knobs and extending through the sleeve, thesaid shaft being capable of a reciprocating movement, an alarm mechanismand means for holding the shaft out of engagement with one of said knobsfor rendering the said knob incapable of operating the latch 20mechanism but capable of operating the alarm mechanism.

18. An alarm-latch mechanism comprising a reciprocating latch, a sleevefor o erating the same, cams projecting from the sleeve for retractingthe latch, arms projecting from the edges of the latch, a lock-stopmember engaging one of said arms, the said member being capable ofoperation by a key, an alarm device and means latch-operating mechanisminoperatlve.

In testimony whereof I hereunto affiX my signature in presence of twowitnesses.

CHARLES E. C. EDEY.

Witnesses:

ALFRED S. EDEY, FRANK J. MILLER.

for rendering the 0.

